To increase security and performance, Windows 11 in S mode only runs apps from the Microsoft Store. If you want to install an app that isn't available in the Microsoft Store, or if you have Windows 10 Pro, Enterprise, or Education and want to upgrade to Windows 11, you'll need to permanently switch out of S mode.

In Outlook on the web, you can import events from an .ics file to your existing calendar or subscribe to a calendar online and receive automatic updates (known as an ICS subscription or an iCal subscription).

Training: Watch and learn how to create a PowerPoint presentation, add/format text, and add pictures, shapes, and/or charts.

提示: 可以使用任何电话号码来请求安全代码。. 电话号码不需要与你的帐户关联。. 手机不需要是智能手机，也不需要连接互联网，只需要能够接收短信。. 你可能需要创建新密码。 阅读有关如何创建强密码的提示。. 如果看到“该 Microsoft 帐户不存在”错误消息，请使用 Microsoft 帐户登录帮助程序。

Note: Exporting and importing a mailbox using a .pst file isn't supported in new Outlook at this time. To export a mailbox, you need to use the desktop version of Outlook (also known as classic Outlook) following the steps below.Classic Outlook is included with Microsoft 365 subscriptions that include desktop apps such as Microsoft 365 Personal or Family or Microsoft 365 Business Standard, and ...

通过使用减号、括号或应用红色（带或不带括号），可以显示负数。 选择要使用负数样式对其设置格式的单元格或单元格区域。

Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox).

Share your subscription.If you have a Microsoft 365 Family subscription, you can share your subscription and its benefits with up to 5 other people. Accounts you share with are not linked, and emails, OneDrive files & photos remain private (unless you share files or photos).

试一试！ Microsoft Edge 集锦. Microsoft Edge 中的集锦可帮助你在 Web 上记录你的想法。 选择集锦以启动新集锦，或将当前的 Microsoft Edge 页添加到现有集锦。. 若要导出集锦，请选择恭喜和更多 ，然后选择发送到 Word、Excel 或 OneNote。. 使用 Microsoft Edge 中的“集锦”梳理你的想法

Argument name. Description. Sum_range (required). The range of cells to sum. Criteria_range1 (required). The range that is tested using Criteria1.. Criteria_range1 and Criteria1 set up a search pair whereby a range is searched for specific criteria. Once items in the range are found, their corresponding values in Sum_range are added.. Criteria1 (required)